Churn.



J. B. M. ,WINBURIL CHUR" (Application led Apr. 14, 1900.) (No Model.)

W/ TNE SSE S TN: wonms'berzks co.. Pumuma., WASHINGTON. n. l;-

JAMES B. M. WINBURN, OF-GAINESVILLE, GEORGIA.

CHURN.

SPECIFICATION formingpart of Letters Patent No. 669,432, dated March 5,1901.

Application filed April 14, 1900.

To all whom, t may concer-n:

Beit known that I, JAMES B. M. WINBURN, residing at Gainesville, in thecounty of Hall and State of Georgia, have invented certain new anduseful Improvements in Churns, of which the following is aspecification.

This invention relates to improvements in churns, and more particularlyrefers to that class of churns having duplex or double-acting dashersand central dasher-staffs; and primarily the invention seeks to providea churning apparatus of the class stated numbering among itscharacteristic features simplicity of construction, ease of operation,and including the no less desirable quality of providing for anincreased capacity with the reduction of labor over that necessary foroperating the ordinary style of churn, and the collection of all of thebutter, of the cream, and of the milk in a minimum amount of time.

In its general nature my invention comprehends a pair of dasher-staffseach formed of an upper and lower section, the u ppersections eachincludingaslotted crank-shaft-engaging member of peculiar constructionand having attached thereto a simple and easily-manipulated locking ordetent mechanism for securing the upper end of the lower staff-sectionand holding it in position to-be properly reciprocated.

My invention also includes a novel construction of dasher-blade; and inits more subordinate features it consists in certain details ofconstruction and peculiar combination of parts, all of which hereinafterwill be fully described, and particularly pointed out in the appendedclaim, reference being had to the accompanying drawings, in which-Figure l is a perspective view of a churn constructed in accordance withmy invention. Fig. 2 is a central vertical section of the same, takenpractically on the line 2 2 of Fig. 3. l Fig. 3 is a transverse sectionof the upper or crank end of the churn, taken on the line 3 3 of Fig. 2.Fig. 4 is a detail perspective view illustrating one of the slottedstad-heads, the upper end of the lower sta-section, and the spring-roddevices for holding the lower staff upon the slotted head. Fig. 5illustrates the fastening devices for securing the cover member to thechurn top or body. Fig. 6is a detail perspective View, on an enlargedscale,

Serial No. 12.838. (No model.)

of one of the dasher blades or disks. Figs. 7 and 8 are cross-sectionsof the same, taken, respectively, on the lines '7 7 and 8 8 of Fig. 6.In the accompanying drawings, in which like characters indicate likeparts in all the figures, l indicates the tub or churn-body, which maybe of any suitable shape, the upper end of which in my completeconstruction of churn, however, has an annular bead l, the purpose ofwhich will presently appear.

The cover 2 has an annular rim 2a, which extends over the upper edge ofthe tub l, and to hold the said cover securely upon the tub I providethe saine with a pair of oppositelydisposed spring-wire clamping members3,

each of which consists of a single piece of.

wire having the ends 3a bent inward to engage eyes 2b upon the top ofthe cover and form, as it were, hinge-joints.

The body portion of each clamping member 3 is bent downward or curvedconcentrically with the cover-rim, it also being bent inward, as at 3c,whereby when the said clamps 3 are ,turned down, as indicated in Fig. 1,they will spring over the beads 1a of the tub and securely hold thecover 2 in place thereon, and to facilitate the manipulation of theclamps 3 their central portions are bent into eyes 3d, which formfinger-pieces.

The under side of the cover has a veutgroove 2d to ventilate theinterior of the churn and permit gases collecting therein to escapetherefrom. Fixedly secured to the cover and projecting vertically upwardtherefrom is a pair of standards il, the upper ends of which are joinedby a cross-head 5, and the said standards and cross-heads straddle apair of centrally-disposed dasher-staff guide-apertures 2e 2e of thecover 2, as shown.

The dashers and the means for connecting them with the dasher-operatingdevices, the construction of which forms an essential feature of thisinvention, are best illustrated in Figs. l and 4, by reference to whichit will be seen each dasher comprises a divided staff formed of a lowersection 6 and an upper section 6a, the lower section being preferablycircular and held to reciprocate freely through the cover member 2, thesaid lower staff-sections passing through the apertures in the cover, asclearly shown in Figs. 2 and. The lower staff-sections 6 may be of wood;but I IOO prefer to construct the upper sections of like material. Eachupper dasher-staff section 6L forms, as it were, a slide portion andpasses through an aperture 5a in the cross-head 5, and on the lower endof each section 6a is carried a slotted laterally-extending guideconsisting of the upper section 6c, preferably integrally formed uponthe lower end of the part 6, and the lower section 6d, having a likeshape to that of the sect-ion 6C, to which it is secured by bolts orrivets, as shown. Each lower guide-section 6d has a non-circular socket7 to receive the non-circular upper end of the lower staff-section 6. Asa simple, effective, and easily-manipulated means for detachablysecuring the lower staff-section to the upper section I employ aclamping device formed of a single piece of spring-wire. Each of theclamping devices (indicated by A) consists of end portions 1l 1l,secured to the lower guide-sections 6d, and a bowed portion 12 12,having a central semicircular loop 13.

It will be noticed by reference to Fig. 3 that the device lies in aplane directly in line with the inner face of the section 6d and theloop portion 13 projects toward the socket of the part 6d. By thisarrangement it is manifest that by inserting the upper end of the lowerdasher-staif section into the loop 13 and fitting 6, with its undercutnotch portion in line with the loop 13, the said loop will spring in alocked engagement with the said notch and hold the lower section 6securely attached to the upper section 6L and to move therewith. Todisconnect the lower staff-section from the upper, it is only necessaryto spring the clamp devices A from engagement with the said section,which permits the upper end being pulled out of the socket in the guideportions 6d.

15 indicates a double cran k-shaf t j ournaled on the uprights 44, thesaid shaft having two crank portions 15, which operate in the slottedguide members of the dasher-staff, and the said cranks are so arrangedas to impart alternate reciprocal motion to the said staff.

By forming the guide portion of the dasherstaff in sections the saidsections may be readily disconnected and the dasher-sta separated fromthe crank-shaft members. Each lower stad-section carries a pair ofdasherblades,the peculiar construction of which also forms a feature ofthis invention.

Each dasher-blade consists, essentially, of a semicircular disk 16,apertured to t upon the lower end of the staff-section 6, upon whichthey are held by clamp-screws or otherwise. Each disk 16 is fitted onits staff with its straight edge innermost, whereby a straightwaypassage is provided between the contiguous edges of the disks on the twostaffsections 6, and the front or facing surfaces are beveled downwardand inward, as at 16, whereby on the descending thrust of the staff thecream will be forced down at one side hy the downgoing dasher-disksoperatingagainst the correspondiugly-shaped disk edges of the opposingdasher-blades as they rise.

To thoroughly agitate and divide the cream globules, the disks are cutout, as indicated at 16, to form cutting-fingers 16, the upper and loweredges of which taper to a point, and to produce a centrifugal orwhirling action to the cream ,the said disks are also cut out in adirection at right angles to the space 16C to form wings 16f, each diskor blade having a pair of such wings the under vfaces of which taperfrom the front edge rearwardly, as at 16g, while the upper faces taperlikewise from the rear edge forward, as at 16h.

Forming the wings in the manner stated provides for dividing the creamat a point indicated at Z on the uplift of the disks, and therebyproduces a whirling of the cream in opposite directions, the directionof whirl eft'ected by one blade or disk being toward that effected bythe disks on the other staff.

In operation b v reason of the peculiar construction of thedasher-blades the cream will be effectively separated anda centrifugalas well as a whirling action produced, providing, as it were, a rockingaction, which will thoroughly aerify the same and produce butter in aminimum amount of time.

All of the parts can be sim ply constructed and are so combined as tocooperatively act to produce the results desired in an easy, quick, andefficient manner.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

In a churn the combination with the body and standards projectedtherefrom, the crosshead joined with the standards,and the crankshaftjournaled upon the standards; of the dasher-staff consisting of anupperand a lower section, the upper section comprising a guide portion6a, movable through the cross-head, its lower end terminating in a baseportion 6, extended in a line transversely to that of the crankshaft,theends of the'said portion 6, being bent down, and a second base portion6d, shaped like the portion 6, and opposing the said portion 6,saidportion 6d, havinga noncircular socket in its under side, and meansfor detachably joining the ends of the said portions 6c 6d, the lowerstaff portion consisting of a rod having blades at the lower end andhaving its upper end terminating in a non-circular portion, adapted totit the socket locking the said lower section to the member 6d, as shownand described.

JAMES B. M. WINBURN.

Witnesses:

C. H. WINBURN, W. I. HOBBS.

IOO

IIO

in the member 6d, and means for detachably

